How can it work

I’m giving my kiddo a Princess Elmo party or I want to. Only 5 adults and 6 kids, well 7 including mine. All adults will take a take a test 2 days before the get together. My question ladies was how can I make a princess Elmo party work. She loves Elmo and princess. I just can’t seem to figure out how to mash them two themes together. I need ideas or suggestions on how to make it work. It’s all she talk about. any ideas ladies?